Tuyere



UNITED STATES PATENT OFFICE.

JACOB STOLIJ, OF MILWAUKEE, WISCONSIN.

TUYERE.

SPECIFICATION forming part' of Letters Patent No. 235,391, dated December 14. 1880.

Application led October 11, 1880. (No model.)

To all whom it may concern Be it known that I, JAGQB STOLL, of Milwaukee, in the county of Milwaukee, and in the State of Wisconsin, have invented certain new and useful Improvements in Tuyeres; and I do hereby declare that the following is a full, clear, and exact description thereof.

My invention consists in an improvement in tuyeres, and will be fully described hereinafter.

In the drawings, Figure 1 is a side view of my improved tuyere, and of an ordinary rotary blower, to which it is connected. Fig. 2 is a longitudinal vertical section, and Fig. 3 is a cross-section.

A is the tube or nozzle which is joined onto the blower, and B is a easing placed about it, and, like the nozzle, terminating in the mouthpiece C. Between the nozzle and casing is left an air-chamber, which opens into the air at B. I also provide the tube or nozzle A with apertures a ct', which enter it on a slant or incline, aperture a slanting out from the mouth-piece and c slantingin Vthe opposite direction, so that when the blower is in operation, while a major portion. of the air from it is forced through the mouth-piece a sufficient quantity passes out through the aperture af intol the space betweenthe tube or nozzle and the Vcasing, to keep up a constant circulation and carry off the heat, which would otherwise burn up the mouth-piece or cause the slag in which it may be embeddedto melt and stop it up. rllhe direction of the aperture o causes the jet of air to be thrown directly upon the mouthpiece.

The function of aperture a is to permit the escape of any gases which may be thrown back from the furnace into the tube or nozzle A, and which, if they entered the blower, might take fire and explode.

My improved tuyere, therefore, will be found to possess the following advantages: It takes from the blower enough of cold air to cool the mouth-piece and prevent its being burned by the extreme heat with which it has to combat; itV will keep the slag about its mouthfrom melting and entering to choke it up, and it will allow the gases from the furnace to pass out without entering the blower.

Of course I may multiply the number of apertures a a without departing from the spirit of my invention.

What I claim as my invention, and desire to secure by Letters Patent, is-

l. In a tuyere, the combination of a tube having one or more apertures a inclined from the blower in the direction of the nozzle, with an outer casing, whereby a portion of the air from the blower is conveyed to the casing and directed against the nozzle for keeping it cool, as set forth.

2. The combination, in a tuyere, of an inner tube and an outer casing therefor, the inner tube having apertures a inclined out from the nozzle for conducting away returning gases that would otherwise enter the bellows and render explosion liable.

3. The combination, in a tuyere, of an outer casing or air-chamber and an inner tube, A, having perforations a c', as set forth.

In testimony that I claim the foregoing I have hereunto set my hand this 29th day of September, 1880.

JACOB STOLL. Witnesses:

S. S. STOUT, Gos. LIPMAN. 

